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在同卵性淘汰赛小鼠Nrsn2中,与感官相关的功能性大脑网络连接的改变

Yuan Yi¹, Fei Dai², Yuwen Zhang²

¹Human Phenome Institute, Institute of Medical Genetics and Genomics, MOE Key Laboratory of Contemporary Anthropology, Zhangjiang Fudan International Innovation Center, Fudan University, 825 Zhangheng Road, Shanghai, 201203 China.

Phenomics (Cham, Switzerland)

|December 26, 2024

概括

神经酶-2 (Nrsn2) 基因淘汰改变了大脑网络连接,特别是在感官区域,可能会影响小鼠的情绪调节和应激弹性.

科学领域:

神经科学是一个神经科学.
遗传学遗传学是一个
神经成像是一种神经成像.

背景情况:

神经酶-2 (Nrsn2) 是一种神经特异性基因,涉及神经发育障碍和情绪调节.
对于Nrsn2在大脑架构和功能中的确切作用,特别是关于网络连接,需要进一步研究.

研究的目的:

研究Nrsn2基因淘汰对大脑微观结构,区域活动和在小鼠发育阶段的网络连接的影响.
阐明Nrsn2,大脑功能网络和情绪处理之间的关系.

主要方法:

在小鼠模型中利用高分辨率 (11.7 T) 多模式磁共振成像 (MRI).
评估了Nrsn2淘汰赛 (Nrsn2-/-) 和野生型小鼠的大脑微观结构,区域功能活动和功能性大脑网络连接.
检查了青少年和成人发育阶段的变化.

主要成果:

Nrsn2淘汰导致功能性大脑网络连接的显著改变,而没有大脑微观结构或区域活动的显著变化.
连接性变化在感官系统中突出,包括味觉和听觉通路,无论是青少年还是成年Nrsn2-/-小鼠.
成人Nrsn2-/-小鼠在默认模式网络 (DMN) 中表现出较低的连接性,与潜在的应激弹性相关.

结论:

Nrsn2在塑造功能性大脑网络连接方面发挥着至关重要的作用,特别是在感官和DMN通路内.
在Nrsn2淘汰赛小鼠中,网络连接的改变可能是感官信息处理和情绪体验的基础,可能有助于压力耐受性.
这些发现突出了Nrsn2作为影响大脑网络动态和情绪调节的关键遗传因素.

关键词:

基因编辑基因编辑磁共振成像技术磁共振成像技术网络分析网络分析神经因素-2 的作用.神经发育障碍神经发育障碍感官系统感官系统感官系统

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